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As someone who is operating kubernetes for 2 years in my home server, using containers is much more maintainable compared to installing everything directly on the server.
I tried using docker-compose first to manage my services. It works well for 2-3 services, but as the number of services grew they started to interfere with each other, at that point I switched to kubernetes.
If your compose files are conflicting then you're likely not tailoring your compose files to fit your server.
I was writing my own compose files, but see my response to a sibling comment for the issue I had.
Can you expand on that? I use docker-compose and have probably around 10 services on the same box. I don't forsee any limitations beyond hardware if I wanted to just keep adding more, but maybe I'm missing something.
If one service needs to connect to another service then I have to add a shared network between them. In that case, the services essentially shared a common namespace regarding DNS. DNS resolution would routinely leak from one service to another and cause outages, e.g if I connect Gitlab container and Redmine container with OpenLDAP container then sometimes Redmine's nginx container would access Gitlab container instead of Redmine container and Gitlab container would access Redmine's DB instead of its own DB.
I maintained some workarounds, like starting Gitlab after starting Redmine would work fine but starting them other way round would have this issue. But switching to Kubernetes and replacing the cross-service connections with network policies solved the issue for me.
An easy fix for this is to create individual networks for connections. I.e. don't create one network with Gitlab, Redmine and OpenLDAP - do two, one with Gitlab and OpenLDAP, and one with Redmine and OpenLDAP.
This was the setup I had, but now I am already using kubernetes with no intention to switch back.
Very understandable :)
Wow - I thought docker was overkill for a home server and you've gone kubernetes! I guess if you use it for work and that's what you're comfortable with?
Thank you... I had to learn kubernetes for work and it was around 2 weeks of time investment and then I figured out I could use it to fix my docker-compose pains at home.
If you run a lot of services, I can attest that kubernetes is definitely not overkill, it is a good tool for managing complexity. I have 8 services on a single-node kubernetes and I like how I can manage configuration for each service independent of each other and also the underlying infrastructure.